M
munchingB
hi all, just interrupting myself reading through every single post on here with a genuine enquiry...
there is an existing single storey extension on my home that i would like to extend.. permission pending. it spans the rear width of the back of the house but it is too narrow, the ceiling too low and whether i were to extend or not i would still dismantle and raise the roof height as both myself and partner are too tall under it, so i figure i should build a new wall a couple of metres out at the same time and take the time to create a bit more sideways space too.
i have a vague idea that to join this proposed foundation to the existing foundation that i either need to key it in somehow or leave some sort of expansion/contraction joint(?) and understand that this is compliant with current building regulations(?)
also can someone put me straight that i wont have to pull up the old slab either and that i can carry out the same keying in or expansion/contraction joint when i pour the new slab next to it?
what are the pros and cons of fixing a foundation and slab as opposed to using joints?
the subsoil is a bit clay though as high as a metre down gets pretty dry and the the existing foundations seem to go only a little further than that.
no large trees directly influencing the building though i have it in my head the contraction/expansion joint thing is the way to go and then i only have to watch the interior floor surface crack forewarning the impending collapse of the roof! )
cheers all..
there is an existing single storey extension on my home that i would like to extend.. permission pending. it spans the rear width of the back of the house but it is too narrow, the ceiling too low and whether i were to extend or not i would still dismantle and raise the roof height as both myself and partner are too tall under it, so i figure i should build a new wall a couple of metres out at the same time and take the time to create a bit more sideways space too.
i have a vague idea that to join this proposed foundation to the existing foundation that i either need to key it in somehow or leave some sort of expansion/contraction joint(?) and understand that this is compliant with current building regulations(?)
also can someone put me straight that i wont have to pull up the old slab either and that i can carry out the same keying in or expansion/contraction joint when i pour the new slab next to it?
what are the pros and cons of fixing a foundation and slab as opposed to using joints?
the subsoil is a bit clay though as high as a metre down gets pretty dry and the the existing foundations seem to go only a little further than that.
no large trees directly influencing the building though i have it in my head the contraction/expansion joint thing is the way to go and then i only have to watch the interior floor surface crack forewarning the impending collapse of the roof! )
cheers all..
